Photothermal-thermoelectric composite film with excellent self-healing and low temperature resistance properties for electromagnetic wave shielding and absorption

Wu, Shaojun; Hou, Hongliang; Xue, Xiang

doi:10.1016/j.carbon.2022.04.071

Cited by 15 publications

(17 citation statements)

References 53 publications

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“…Reproduced with permission. [ 124 ] Copyright 2022, Elsevier. c) The prepared CNT membrane, CNT thin film metamaterial formed by laser etching, and broadband absorbing composite based on CNT thin film metamaterial.…”

Section: Macro/microstructure Of Cnt‐based Microwave‐absorbing Materialsmentioning

confidence: 99%

“…Composite Fe 3 O 4 /CNTs with pitted structure show strong broadband absorption at a film thickness of 0.4 mm. Wu et al [124] assembled an excellent photothermalthermoelectric polydimethylsiloxane/SWCNTs@Fe 3 O 4 thin film (PSFN), which has excellent EMW attenuation, self-healing, and low-temperature resistance through cooperative manipulation of composition, structure, morphology, and other factors. The flexibility of PSFN composite film is shown in Figure 2b.…”

Section: Thin Film Absorbing Materialsmentioning

confidence: 99%

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Structure Design, Surface Modification, and Application of CNT Microwave‐Absorbing Composites

Cai,

Yu,

Cheng

et al. 2023

Advanced Sustainable Systems

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Electromagnetic (EM) contamination has now become a non‐negligible problem. To solve the EM contamination problem, it is imperative to develop high‐efficiency absorption materials with thin thickness, light weight, strong absorption properties, and broad absorption bands. Carbon nanotubes (CNTs) have a special helical structure and chirality, which will lead to special EM effects and therefore can absorb EM microwaves through magnetic polarization attenuation such as hysteresis loss, domain wall resonance, and aftereffect loss. Moreover, they have the characteristics of light weight, good compatibility, wide absorption frequency band, and high electrical loss angle tangent. In this paper, the different structures of CNT microwave‐absorbing composites are reviewed and the effects of the composite structures on the microwave‐absorbing properties are systematically discussed. The methods and mechanisms of surface modification of CNT absorber composites and the effects of modification on the absorber properties are summarized in detail. The progress of two specific CNT microwave‐absorbing composites, namely flexible and high‐temperature microwave‐absorbing composites, is briefly described. The shortcomings and challenges in the application of CNT microwave‐absorbing composites are described and future research directions for CNT microwave‐absorbing composites are explored.

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Section: Macro/microstructure Of Cnt‐based Microwave‐absorbing Materialsmentioning

confidence: 99%

Section: Thin Film Absorbing Materialsmentioning

confidence: 99%

Structure Design, Surface Modification, and Application of CNT Microwave‐Absorbing Composites

Cai,

Yu,

Cheng

et al. 2023

Advanced Sustainable Systems

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“…Let us use the boundary conditions described below to determine the constants of integration A 1 and A 2 in Equations ( 10) and (12).…”

Section: Theoretical Aspects Of the "Field" Approachmentioning

confidence: 99%

“…The authors proposed two ways to reduce the reactive power which arises as a result of the formation of standing waves-either by the "suppression" (damping) of the already formed standing waves or by preventing the formation of reflected waves by the application of special thin film coatings (single or multi-layered) to the surface of these elements of the electric transport system. The last way is the most effective and state of the art method, which is developing in recent publications [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Electrodynamics of Power Losses in the Devices of Inter-Substation Zones of AC Electric Traction Systems

et al. 2022

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This article presents a new method for the estimation of active power losses based on a “field” approach, i.e., on the theory of the electromagnetic field and the theory of propagation of electromagnetic waves in a dielectric medium. Electromagnetic waves are assumed to transmit energy from the traction substation to electric rolling stock through the airspace of the inter-substation zone (i.e., not through the wires of the traction network) and meet electrically conductive surfaces on their way. The waves are partially reflected from the surfaces and partially penetrate them, thus creating thermal losses, the determination of which is the main task of this article. The analytical expressions for specific losses of active power are obtained by solving the system of Maxwell’s equations. Calculations of specific power losses in the catenary, rails, roofs, and bottoms of carriages and electric locomotives are performed. Power losses in carriages and electric locomotives are found to be at least 7%. A comparative assessment of the magnitude of total power losses of different types obtained by the “field” and “circuit” approaches is provided, which has established that “conditional” losses correspond to losses in rails, train carriages, and electric locomotives.

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“…Thermoelectric (TE) materials can provide a promising route to harvest ubiquitous waste heat, directly converting thermal gradients into electrical power, [1][2][3][4][5][6] benefiting applications like aerospace, 7 industrial waste heat recovery, 8 energy harvesting, [9][10][11] self-powered sensors, [12][13][14][15] electromagnetic wave shielding and absorption, 16 touch sensing, 17 health monitoring and personal temperature regulation. Generally, the TE performance of a material can be evaluated by a dimensionless figure of merit (ZT), which scales with the electrical conductivity (s), the square of the Seebeck coefficient (S), the inverse of thermal conductivity (k) and the material temperature T (ZT = TS 2 s/k).…”

mentioning

confidence: 99%

Optimization of thermoelectric properties of carbon nanotube veils by defect engineering

et al. 2023

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Photothermal-thermoelectric composite film with excellent self-healing and low temperature resistance properties for electromagnetic wave shielding and absorption

Cited by 15 publications

References 53 publications

Structure Design, Surface Modification, and Application of CNT Microwave‐Absorbing Composites

Structure Design, Surface Modification, and Application of CNT Microwave‐Absorbing Composites

Electrodynamics of Power Losses in the Devices of Inter-Substation Zones of AC Electric Traction Systems

Optimization of thermoelectric properties of carbon nanotube veils by defect engineering

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